She then dragged her child away before builders chased the gang away while holding scaffolding poles.

Three of the gang, Omar Tafat, 22, Josh Myers, 19, and Kian Taylor, 20, were caught following a high-speed police chase lasting more than 90 minutes. All three piled onto the same bike, which was driven the wrong way on the A40 on 7 May 2018.

The gang, whose leader was Terry Marsh, 32, had previously been involved in two thefts of the same high-end outdoor clothing shop in Kensington, violently assaulting a security guard during the second raid.

Overall it cost the business £43,000 in lost goods and a total of £80,000 including damage.

Since then other offences have included stealing an officer’s bag from an unmarked police car, spraying a police car with fire foam extinguishers as officers waited for a stolen moped to be collected and the theft of £83,000 worth of MacBooks and other Apple products from another Kensington business.

Four defendants also travelled to Redditch, Worcestershire, in January 2018 where they stole three motorbikes worth a total of £30,000 after spotting the owner’s address on an eBay advert.

Sentences in full

Marsh, of Fulham, pleaded guilty to conspiracy to rob, conspiracy to steal and conspiracy to burgle – 13 years, two months

Tafat, of Fulham, admitted theft, going equipped to steal, criminal damage to a police car and breach of a criminal behaviour order, and was found guilty of two further counts of robbery and possession of an offensive weapon – eight years five months imprisonment

Myers, of Shepherds Bush, pleaded guilty to attempted theft, going equipped to steal, criminal damage to a police car, dangerous driving, driving whilst disqualified, possession of an offensive weapon and conspiracy to steal and found guilty of two further counts of robbery and possession of an offensive weapon – eights years detention in a young offenders’ institution

Taylor, of no fixed address, admitted attempted theft, going equipped to steal, criminal damage to a police car, dangerous driving, driving whilst disqualified and possession of an offensive weapon, and was found guilty of robbery – nine years, four months detention

Steven Weller, 36, of Ealing, admitted conspiracy to rob and conspiracy to burgle – six years, seven months imprisonment